One of the overarching problems of the world today is that too many people see themselves as dominating other groups of people, and dominating nature. That is a root problem. And thus part of a core solution builds from Kohlberg's commitment to a universal moral orientation, though extended to include not only all people but the more-than-human world: animals, trees, plants, species, ecosystems, and the land itself. In this article, I make a case for this form of ethical extensionism, and then present psychological evidence for it in both children and adults, including studies with inner-city Black youth and their parents. Then I build on Piaget's, Kohlberg's, and Turiel's emphasis that interaction with the physical and social world is a critical mechanism for development. My corollary is this: that to reverse the incredibly fast human-caused destruction of nature--the wellsprings of human existence--we need to deepen and extend people's interactions with nature, and with its relatively wild forms, even in urban environments. Toward this end, I discuss my current body of research and framework for urban design based on what are referred to as interaction patterns.